20yo male here! How bad is my frame and how i can make it wider (especially bones growth)

Just for some perspective OP,

This is what my frame looked like before I started training with the intent of putting on mass and getting stronger:


This is what it looks like now, after a few years. I’m roughly the same age as you are now.

I have no idea if my bones got larger, but I definitely look wider. Putting on a lot of muscle and weight in general tends to do that. Your bones will sort themselves out.